Vacuum
Water
Glass
Hydrogen gas
Sound waves cannot travel through
Sound waves do not show the phenomenon of
Sound waves in air are ........... waves
Specific gravity is defined as the ratio of
Speed in a given direction is called
Speed of light is maximum in _
Speed of sound in air is unaffected by change in
Speed of sound is maximum in which among the following?
Speed of sound is the greatest in :
Sphygmomanometer measures
